I think there's much more to like than to dislike on the new GA site. Especially for us readers of stories, there are a lot of neat ways to search and sort through all the stories, poems, forums, and blogs that are posted here. It will take a little bit of time and effort on our part to learn how all the new features work.
I would guess most writers feel sort of neutral on the changes. For eFiction prose, the new system seems relatively easy to use. Hosted authors' stories are not quite as snazzy as they used to be, but that may save on valuable resources. For me, as a poet, I was disappointed that the formatting functions in the editor did not work as I expected. Poems, usually short by comparison to prose stories, would benefit from formatting which adds visual appeal.
As for the other features of GA, especially the sense of community that others have mentioned, they are as good as ever. I have made a large number of friends over the nearly five years since I joined. I have helped several authors by serving as a beta reader for their stories. And much to my surprise, when I stop to think about it, I have tried my hand at poetry, which I would never have considered doing otherwise. I appreciate the encouragement of other members the and comments my work has received.
As for me, GA's the place to be.